fix(deps): update dependency python-gitlab to v3.13.0

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
python-gitlab	==3.12.0 -> ==3.13.0

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Release Notes

python-gitlab/python-gitlab

v3.13.0

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Feature

• group: Add support for group restore API (9322db6)
• client: Automatically retry on HTTP 409 Resource lock (dced76a)
• api: Add support for bulk imports API (043de2d)
• api: Add support for resource groups (5f8b8f5)
• api: Support listing pipelines triggered by pipeline schedules (865fa41)
• Allow filtering pipelines by source (b6c0872)
• client: Bootstrap the http backends concept (#​2391) (91a665f)
• Add resource iteration events (see https://docs.gitlab.com/ee/api/resource_iteration_events.html) (ef5feb4)
• Allow passing kwargs to Gitlab class when instantiating with from_config (#​2392) (e88d34e)
• Add keep_base_url when getting configuration from file (50a0301)

Fix

• client: Regression - do not automatically get_next if page=# and (585e3a8)
• Change return value to "None" in case getattr returns None to prevent error (3f86d36)
• deps: Bump requests-toolbelt to fix deprecation warning (faf842e)
• Use the ProjectIterationManager within the Project object (44f05dc)
• api: Make description optional for releases (5579750)

Documentation

• faq: Describe and group common errors (4c9a072)

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